Three years ago, in 2021, Weilai released a 150 degree semi-solid battery, which is a new type of solid liquid electrolyte battery. It has the advantages of high energy density, high safety, etc. The same battery compartment volume can store more electricity, which significantly improves the endurance of new energy vehicles. Recently, the 150 degree battery of Weilai has finally been officially mass produced. Li Bin, CEO of Weilai, also personally drove the 150 degree battery model for live broadcast. The battery is expected to be put on the market soon.
Three years ago, Weilai released a 150 degree semi-solid battery
On January 9, 2021, Weilai“ NIO Day 2020 ”The 150 degree battery was released at the event, which introduced the cutting-edge solid-state battery technology in the battery field to the new energy vehicle industry. It was reported that the 150 degree battery of Weilai could increase the energy density by 50% compared with the 100 degree battery of Weilai.
Weilai 150 degree battery adopts safer and more efficient solid liquid electrolyte to establish a safe and stable interface between electrolyte and positive and negative electrode materials. In terms of material, the cathode is made of ultra-high nickel cathode material, and the interface between the material and electrolyte is improved by using the nano scale coating technology; The negative electrode is made of silicon carbon composite negative electrode material. The innovative homogeneous packaging and inorganic pre lithium process have greatly improved the energy density.
At that time, the 150 degree battery of Weilai was expected to be delivered at the beginning of the fourth quarter of 2022. It was unknown whether the delivery time had been delayed due to the impact of the epidemic, which also triggered many speculations in the industry and users.
The CEO stepped down to measure the 150 degree battery life
Three years later, in order to dispel user anxiety, on December 17, 2023, Li Bin, CEO of Weilai, drove Weilai ET7 equipped with 150 degree batteries for an ultra long endurance road test live broadcast. From Shanghai The Expo Center starts from the power station, and the ambient temperature is - 2 ° C, Via Taizhou, Cangnan, Fu'an, Lianjiang, and finally arrive Longjue East Service Zone in Xiamen.
The average driving speed of the whole journey is 83.9 km/h. After 14 hours, this 150 degree battery has driven 1044 km in total, with 3% of the remaining charge, which marks a page in the history of new energy vehicles.
The 150 degree battery of Weilai is officially mass produced, and its volume and weight are basically unchanged
On February 4, 2024, the Ministry of Industry and Information Technology announced The list of the Catalogue of Energy Saving New Energy Vehicle Models Enjoying Vehicle and Vessel Tax Reduction and Exemption (the 58th batch) and the Catalogue of New Energy Vehicle Models Enjoying Vehicle Purchase Tax Reduction and Exemption (the second batch), and the supplementary models of Weilai with 150 degree batteries officially entered the list.
The endurance mileage of more than 900km under CLTC test conditions are as follows:
ES8:900km
ES6:930km
ES7:930km
EC6:935km
EC7:940km
The endurance mileage of more than 1000km under CLTC test conditions are as follows:
ET5T:1010km
ET7:1050km
ET5:1055km
In April 2024, the first Weilai 150 degree battery will be officially offline and large-scale production will officially begin.
The 150 degree battery of Weilai has an ultra-high energy density, the rated voltage is 337V, the rated capacity is 446Ah, the energy density of a single internal cell is 360Wh/kg, and the overall weight of the battery pack is only 575kg. As a reference, the overall weight of the 100 degree battery of Weilai is up to 555kg, and the 150 degree battery has only increased by 20kg, or 3%. The increased power is up to 50%, and the endurance mileage has also been increased correspondingly.
150 degree batteries cost up to 300000 yuan and are put on the market in the form of renting
At present, there are two kinds of optional batteries for Weilai New Energy Vehicles, namely, 75 degree and 100 degree batteries. The one-time battery purchase is also supported BaaS car purchase (battery rental service). Compared with the buyout system, the cost of BaaS car purchase decreased by 70000 (75 degrees) and 128000 (100 degrees) respectively, The monthly rental fees for BaaS car batteries are 728 yuan (75 degrees) and 1128 yuan (100 degrees).
According to Li Bin, the ratio of 75 degree batteries to 100 degree batteries is 95:5 for Ulai users to buy cars. The usage rate of ultra long distance driving scenarios is not high. A larger battery means that users need to pay more for infrequent scenarios. 75 degree batteries have met most users' daily usage scenarios.
The cost of semi-solid battery cell is very high, and the cost of 150 degree battery Equivalent to the price of one ET5 (about 300000 yuan) The 150 degree battery is mainly put on the market by leasing. At present, Weilai has built 2228 exchange power stations in China, including 707 expressway exchange power stations. In a few areas, 150 degree batteries have been put into the exchange power stations.
Previously, the benchmark price of the 75 degree battery upgrade 100 degree battery for Weilai's daily rental service was 50 yuan per day, and 880 yuan per month (31 days) was capped. Considering that the number of 150 degree batteries is relatively scarce, it is speculated that the rental cost of 150 degree batteries will rise significantly, and it is expected that 150 degree batteries will be put on the market soon.
Summary of charging head network
The size and weight of the 150 degree battery of Weilai are basically unchanged, and it is compatible with the existing batteries of Weilai models. Users can enjoy the 150 degree battery through charging, changing power, upgrading and other systems, which is the unique advantage of the power change platform. The large capacity battery is mainly used for special scenarios, such as holidays and golden week trips, such as going to the countryside, mountains and other areas where it is inconvenient to supplement energy. The 150 degree battery provides longer endurance than the 100 degree battery, making the journey energy more comfortable and reassuring.
Compared with traditional batteries, semi-solid batteries have the advantages of higher energy density, safer and stronger performance. Previously, they only existed in laboratories, and ordinary consumers could not touch them at all. Weilai has brought semi-solid batteries to the field of new energy vehicles, so that consumers can also experience the most cutting-edge technologies in the battery industry. On the other hand, the realization of mass production can also drive the healthy development of scientific research and industry. In the future, the cost of solid state batteries will be lower and lower, and their applications will be more extensive.